text viewer: the display of the statusbar is synchronized actual battery, time, etc. and deletes unnecessary lcd_set_backdrop().

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27194 a1c6a512-1295-4272-9138-f99709370657
diff --git a/apps/plugins/text_viewer/text_viewer.c b/apps/plugins/text_viewer/text_viewer.c
index db370f5..e5f3160 100644
--- a/apps/plugins/text_viewer/text_viewer.c
+++ b/apps/plugins/text_viewer/text_viewer.c
@@ -46,12 +46,10 @@
         return PLUGIN_ERROR;
     }
 
-#if LCD_DEPTH > 1
-    rb->lcd_set_backdrop(NULL);
-#endif
-
     while (!done) {
 
+        rb->gui_syncstatusbar_draw(rb->statusbars, preferences->statusbar);
+
         if (display_update)
             tv_draw();